Plate X. 



DiCLIDOPHOKA TETKODONIS. 



Fig. 1. The wliole worm viewed from the ventral side. The uterus is greatly 



distended by tlie numerous eggs which it contains. 

 „ 2. Surface view of the whole worm, from the ventral side, x 5 diam. 

 ,, 3. Anterior part of the body in profile. 

 „ 4. Cross-section through the slender stalk-like portion of the body, x 78 



diam. 



DiCLIDOPHOEA SESSILIS. 



Fig. 5. The whole worm viewed from the ventral side. Nervous system, chiti- 



nous framework of the suckers, and egg-shells yellow ; excretoiy system 



indigo-blue ; muscle of the posterior suckers red. 

 „ 0. Anterior end of the body ; to show the muscular fibres attached to the 



anterior suckers, x 73 diam. 

 „ 7. t/, hook of the penis a little in profile, b, basal portion of the same 



viewed from the front. Both x 305 diam. 

 „ 8. Ovarian ova near the oviduct end. x 305 diam. 



DiCLIDOPHOEA ELONGATA. 



Fig. 9. The whole worm viewed from the ventral side. Nervous system yellow. 

 ,, 10. a, hook of the penis a little in profile, h, basal portion of the same 

 viewed from the front. Both x 305 diam. 



